HYDROMEDUSAE. 745 



I have also just received from the Concilium Bihliographicmn at Zurich the title of the 

 following paper, "The Craspedote Medusa Olindias and some of its Natural Allies," 1903, 

 in The Mark Anniversary Volume, pp. 1 — 22, 3 pis. I have been unable to find a copy 

 of this book in the Scientific Libraries in London. 



Whilst my manuscript was in the hands of the printer I examined about 40 specimens 

 of Solmundella bitentaculata taken by Prof Herdman at Ceylon. These specimens show that 

 the shape of the umbrella is variable. One of them has the top of the umbrella very 

 much like the original figure of the species given by Quoy and Gaimard. In the largest 

 specimens there are three sense organs in each octant, but the smaller ones have only two 

 sense organs in each octant. I consider the Maldive specimens to be an intermediate stage 

 in development. Bigelow found Aeginella dissonema, Haeckel, at the Maldives, and as this 

 species is widely distributed, it is probably identical with Solmundella bitentaculata. Maas 

 (1904) has pointed out that Aeginella is the name of a Crustacean genus and that it cannot 

 be used for a medusa. 



24</i May, 1904. 



LITERATURE. 



Agassiz, a. 1865. "North American Acalephae." Catalogue Mus. Camp. Zool. Harvard, No. n. 

 Cambridge, U.S.A. 



Agassiz, A., and Mayer, A. G. 1899. "Acalephs from the Fiji Islands." Memoirs Mus. Comp. Zool. 

 Harvard, Vol. xxxii. pp. 157 — 189, 17 Plates. 



1902. "Reports on the Scientific Results of the Expedition to the Tropical 



Pacific. ..in the Albatross, Part in. Medusae." Memoirs Mus. Comp. Zool. Harvard, Vol. xxvi. 

 pp. 139—176, Pis. I— XIII. 



Agassiz, L. 1860 — 1862. Contributions to the Natural History of the United States oj America, 

 Vols. Ill — IV. Boston. 



Allman, G. J. 1871 — 1872. Monograph on the Gymnoblastic or Tubularian Hydroids. Ray Soc. 

 London. 



Bedot, M. 1896. "Les Siphonophores de la Baie d'Amboine. Etude suivie d'une Revision de la 

 famille des Agahnidae." Revue Suisse Zool. Tom. in. pp. 367 — 414, PL xii. 



Blainville, H. M. de. 1834. Manuel d'Actinologie ou de Zoophytologie. Paris. 



Brandt, J. F. 1835. "Prodromus descriptiones animalium ab H. Mertensio observatorura." Recueil 

 des Actes Acad. Imp. Sci. St Petersbourg (1834). 



1838. " Ausfiihrliche Beschreibung der voii C. H. Mertens auf seiner Weltumsegelung 



beobachteten Schirniquallen, nebst allgemeiueu Bemerkungen die Schirmquallen uberhaupt von 

 J. F. Brandt." Mem. Acad. Imp. St Petersbourg, S^r. 6, Tom. n. (Sci. Nat.), pp. 237—411. 

 Taf. I — XXXI. 



Brooks, W. K. 1880. "Budding in Free Medusae." American Naturalist, Vol. xiv. pp. 670—671. 



1882. "List of Medusae found at Beaufort, North Carolina, during the Summers of 



1880—1881." Studies Biol. Lab. Johns Hopkins Univ. Vol. n. pp. 135—146. 



